转换对象的数组，其基本类型的数组 [英] Converting an array of objects to an array of their primitive types

问题描述

如果您有有一个基本类型（例如字节，整型，字符等）的Java对象的数组。是否有一个整洁的方式，我可以把它转换成原始类型的数组？尤其是这可以无需通过创建内容的新数组和循环来完成。

If you have an array of Java objects which have a primitive type (for example Byte, Integer, Char, etc). Is there a neat way I can convert it into an array of the primitive type? In particular can this be done without having to create a new array and loop through the contents.

因此​​，例如，给定的

So for example, given

Integer[] array

什么是转换这个最巧妙的方式进入

what is the neatest way to convert this into

int[] intArray

不幸的是，这是我们必须相当频繁做Hibernate和超过我们无法控制一些第三方库接口连接时的东西。看来这将是一个相当常见的操作，所以我会感到惊讶，如果没有快捷方式。

Unfortunately, this is something we have to do quite frequently when interfacing between Hibernate and some third party libraries over which we have no control. It seems this would be a quite common operation so I would be surprised if there's no shortcut.

感谢您的帮助！

推荐答案

不幸的是，没有什么在Java平台做到这一点。顺便说一句，你还需要显式处理（即整数[] 阵列空元素是什么 INT 你要使用那些？）。

Unfortunately, there's nothing in the Java platform that does this. Btw, you also need to explicitly handle null elements in the Integer[] array (what int are you going to use for those?).

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